发明名称 |
Apparatus and method for estimating stability factor of combustion applicable to vehicular internal combustion engine |
摘要 |
In an apparatus and method for estimating a stability factor of combustions in a vehicular internal combustion engine, a engine revolution synchronized filter processing is carried out for a signal derived in synchronization with the engine revolutions and, thereafter, a time synchronized filter processing is carried out to extract the frequency component correlated to the engine combustion stability factor. Noise components synchronized with the engine revolutions, based on a revolution speed sensor working accuracy error, and based on tire (road) wheel revolution (rotation) first-order vibration frequency are eliminated. In addition, a resonance frequency component in a vehicular drive train is extracted as a frequency component correlated to the combustion stability factor.
|
申请公布号 |
US5560336(A) |
申请公布日期 |
1996.10.01 |
申请号 |
US19950403014 |
申请日期 |
1995.03.13 |
申请人 |
NISSAN MOTOR CO., LTD. |
发明人 |
TAKAHASHI, NOBUTAKA;OKURA, KAZUMA;DEGUCHI, YOSHITAKA;MATSUMURA, TOSHIO |
分类号 |
F02P5/15;G01M15/11;(IPC1-7):F02P5/14;G01L3/26;G06F19/00 |
主分类号 |
F02P5/15 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|